Chavez Jr hits LA

Photos: Chris Farina / Top Rank

Undefeated WBC Middleweight Champion Julio Cesar Chavez Jr. works out after arriving in Los Angeles to kick off a coast-to-coast media tour announcing his upcoming Mexican Independence Day Middleweight championship battle against two-division world champion Sergio Martinez. Promoted by Top Rank, Zanfer Promotions and DiBella Entertainment, in association with Wynn Las Vegas,At&T and Tecate, Chavez Jr. vs Martinez will take place Saturday, September 15,at Thomas & Mack Center in Las Vegas live on HBO Pay Per View.